* (C) Copyright 2001-2003
* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <command.h>
#include <malloc.h>
+#include <sja1000.h>
-
-#if 0
-#define FPGA_DEBUG
-#endif
+#undef FPGA_DEBUG
DECLARE_GLOBAL_DATA_PTR;
-extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
extern void lxt971_no_sleep(void);
/* fpga configuration data - gzip compressed and generated by bin2c */
*/
#include "../common/fpga.c"
-
/*
- * include common auto-update code (for esd boards)
+ * generate a short spike on the CAN tx line
+ * to bring the couplers in sync
*/
-#include "../common/auto_update.h"
-
-au_image_t au_image[] = {
- {"plu405/preinst.img", 0, -1, AU_SCRIPT},
- {"plu405/u-boot.img", 0xfffc0000, 0x00040000, AU_FIRMWARE},
- {"plu405/pImage_${bd_type}", 0x00000000, 0x00100000, AU_NAND},
- {"plu405/pImage.initrd", 0x00100000, 0x00200000, AU_NAND},
- {"plu405/yaffsmt2.img", 0x00300000, 0x01c00000, AU_NAND},
- {"plu405/postinst.img", 0, 0, AU_SCRIPT},
-};
-
-int N_AU_IMAGES = (sizeof(au_image) / sizeof(au_image[0]));
-
-
-/* Prototypes */
-int gunzip(void *, int, unsigned char *, unsigned long *);
-
+void init_coupler(u32 addr)
+{
+ struct sja1000_basic_s *ctrl = (struct sja1000_basic_s *)addr;
+
+ /* reset */
+ out_8(&ctrl->cr, CR_RR);
+
+ /* dominant */
+ out_8(&ctrl->btr0, 0x00); /* btr setup is required */
+ out_8(&ctrl->btr1, 0x14); /* we use 1Mbit/s */
+ out_8(&ctrl->oc, OC_TP1 | OC_TN1 | OC_POL1 |
+ OC_TP0 | OC_TN0 | OC_POL0 | OC_MODE1);
+ out_8(&ctrl->cr, 0x00);
+
+ /* delay */
+ in_8(&ctrl->cr);
+ in_8(&ctrl->cr);
+ in_8(&ctrl->cr);
+ in_8(&ctrl->cr);
+
+ /* reset */
+ out_8(&ctrl->cr, CR_RR);
+}
-int board_early_init_f (void)
+int board_early_init_f(void)
{
/*
* IRQ 0-15 405GP internally generated; active high; level sensitive
* IRQ 30 (EXT IRQ 5) PCI INTA; active low; level sensitive
* IRQ 31 (EXT IRQ 6) COMPACT FLASH; active high; level sensitive
*/
- mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
- mtdcr(uicer, 0x00000000); /* disable all ints */
- mtdcr(uiccr, 0x00000000); /* set all to be non-critical*/
- mtdcr(uicpr, 0xFFFFFF99); /* set int polarities */
- mtdcr(uictr, 0x10000000); /* set int trigger levels */
- mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority*/
- mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */
+ mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
+ mtdcr(UIC0ER, 0x00000000); /* disable all ints */
+ mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical*/
+ mtdcr(UIC0PR, 0xFFFFFF99); /* set int polarities */
+ mtdcr(UIC0TR, 0x10000000); /* set int trigger levels */
+ mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest prio */
+ mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
/*
- * EBC Configuration Register: set ready timeout to 512 ebc-clks -> ca. 15 us
+ * EBC Configuration Register: set ready timeout to
+ * 512 ebc-clks -> ca. 15 us
*/
- mtebc (epcr, 0xa8400000); /* ebc always driven */
+ mtebc(EBC0_CFG, 0xa8400000); /* ebc always driven */
return 0;
}
-
-int misc_init_f (void)
+int misc_init_r(void)
{
- return 0; /* dummy implementation */
-}
-
-
-int misc_init_r (void)
-{
- volatile unsigned char *duart0_mcr = (unsigned char *)((ulong)DUART0_BA + 4);
- volatile unsigned char *duart1_mcr = (unsigned char *)((ulong)DUART1_BA + 4);
unsigned char *dst;
+ unsigned char fctr;
ulong len = sizeof(fpgadata);
int status;
int index;
gd->bd->bi_flashstart = 0 - gd->bd->bi_flashsize;
gd->bd->bi_flashoffset = 0;
- dst = malloc(CFG_FPGA_MAX_SIZE);
- if (gunzip (dst, CFG_FPGA_MAX_SIZE, (uchar *)fpgadata, &len) != 0) {
- printf ("GUNZIP ERROR - must RESET board to recover\n");
- do_reset (NULL, 0, 0, NULL);
+ dst = malloc(CONFIG_SYS_FPGA_MAX_SIZE);
+ if (gunzip(dst, CONFIG_SYS_FPGA_MAX_SIZE,
+ (uchar *)fpgadata, &len) != 0) {
+ printf("GUNZIP ERROR - must RESET board to recover\n");
+ do_reset(NULL, 0, 0, NULL);
}
status = fpga_boot(dst, len);
printf("\nFPGA: Booting failed ");
switch (status) {
case ERROR_FPGA_PRG_INIT_LOW:
- printf("(Timeout: INIT not low after asserting PROGRAM*)\n ");
+ printf("(Timeout: INIT not low "
+ "after asserting PROGRAM*)\n");
break;
case ERROR_FPGA_PRG_INIT_HIGH:
- printf("(Timeout: INIT not high after deasserting PROGRAM*)\n ");
+ printf("(Timeout: INIT not high "
+ "after deasserting PROGRAM*)\n");
break;
case ERROR_FPGA_PRG_DONE:
- printf("(Timeout: DONE not high after programming FPGA)\n ");
+ printf("(Timeout: DONE not high "
+ "after programming FPGA)\n");
break;
}
for (index=0;index<1000;index++)
udelay(1000);
}
- putc ('\n');
+ putc('\n');
do_reset(NULL, 0, 0, NULL);
}
printf("%s ", &(dst[index+1]));
index += len+3;
}
- putc ('\n');
+ putc('\n');
free(dst);
/*
* Reset external DUARTs
*/
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_DUART_RST);
- udelay(10); /* wait 10us */
- out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_DUART_RST);
- udelay(1000); /* wait 1ms */
+ out_be32((void*)GPIO0_OR,
+ in_be32((void*)GPIO0_OR) | CONFIG_SYS_DUART_RST);
+ udelay(10);
+ out_be32((void*)GPIO0_OR,
+ in_be32((void*)GPIO0_OR) & ~CONFIG_SYS_DUART_RST);
+ udelay(1000);
+
+ /*
+ * Set NAND-FLASH GPIO signals to default
+ */
+ out_be32((void*)GPIO0_OR,
+ in_be32((void*)GPIO0_OR) &
+ ~(CONFIG_SYS_NAND_CLE | CONFIG_SYS_NAND_ALE));
+ out_be32((void*)GPIO0_OR,
+ in_be32((void*)GPIO0_OR) | CONFIG_SYS_NAND_CE);
+
+ /*
+ * Setup EEPROM write protection
+ */
+ out_be32((void*)GPIO0_OR,
+ in_be32((void*)GPIO0_OR) | CONFIG_SYS_EEPROM_WP);
+ out_be32((void*)GPIO0_TCR,
+ in_be32((void*)GPIO0_TCR) | CONFIG_SYS_EEPROM_WP);
/*
* Enable interrupts in exar duart mcr[3]
*/
- *duart0_mcr = 0x08;
- *duart1_mcr = 0x08;
+ out_8((void *)DUART0_BA + 4, 0x08);
+ out_8((void *)DUART1_BA + 4, 0x08);
- return (0);
-}
+ /*
+ * Enable auto RS485 mode in 2nd external uart
+ */
+ out_8((void *)DUART1_BA + 3, 0xbf); /* write LCR */
+ fctr = in_8((void *)DUART1_BA + 1); /* read FCTR */
+ fctr |= 0x08; /* enable RS485 mode */
+ out_8((void *)DUART1_BA + 1, fctr); /* write FCTR */
+ out_8((void *)DUART1_BA + 3, 0); /* write LCR */
+ /*
+ * Init magnetic couplers
+ */
+ if (!getenv("noinitcoupler")) {
+ init_coupler(CAN0_BA);
+ init_coupler(CAN1_BA);
+ }
+ return 0;
+}
/*
* Check Board Identity:
*/
-int checkboard (void)
+int checkboard(void)
{
char str[64];
- int i = getenv_r ("serial#", str, sizeof(str));
+ int i = getenv_f("serial#", str, sizeof(str));
- puts ("Board: ");
+ puts("Board: ");
- if (i == -1) {
- puts ("### No HW ID - assuming PLU405");
- } else {
+ if (i == -1)
+ puts("### No HW ID - assuming PLU405");
+ else
puts(str);
- }
- putc ('\n');
+ putc('\n');
return 0;
}
-
-long int initdram (int board_type)
-{
- unsigned long val;
-
- mtdcr(memcfga, mem_mb0cf);
- val = mfdcr(memcfgd);
-
- return (4*1024*1024 << ((val & 0x000e0000) >> 17));
-}
-
-
#ifdef CONFIG_IDE_RESET
+#define FPGA_CTRL (CONFIG_SYS_FPGA_BASE_ADDR + CONFIG_SYS_FPGA_CTRL)
void ide_set_reset(int on)
{
- volatile unsigned short *fpga_mode =
- (unsigned short *)((ulong)CFG_FPGA_BASE_ADDR + CFG_FPGA_CTRL);
-
/*
* Assert or deassert CompactFlash Reset Pin
*/
if (on) { /* assert RESET */
- *fpga_mode &= ~(CFG_FPGA_CTRL_CF_RESET);
+ out_be16((void *)FPGA_CTRL,
+ in_be16((void *)FPGA_CTRL) &
+ ~CONFIG_SYS_FPGA_CTRL_CF_RESET);
} else { /* release RESET */
- *fpga_mode |= CFG_FPGA_CTRL_CF_RESET;
+ out_be16((void *)FPGA_CTRL,
+ in_be16((void *)FPGA_CTRL) |
+ CONFIG_SYS_FPGA_CTRL_CF_RESET);
}
}
#endif /* CONFIG_IDE_RESET */
-
void reset_phy(void)
{
#ifdef CONFIG_LXT971_NO_SLEEP
lxt971_no_sleep();
#endif
}
+
+#if defined(CONFIG_SYS_EEPROM_WREN)
+/* Input: <dev_addr> I2C address of EEPROM device to enable.
+ * <state> -1: deliver current state
+ * 0: disable write
+ * 1: enable write
+ * Returns: -1: wrong device address
+ * 0: dis-/en- able done
+ * 0/1: current state if <state> was -1.
+ */
+int eeprom_write_enable(unsigned dev_addr, int state)
+{
+ if (CONFIG_SYS_I2C_EEPROM_ADDR != dev_addr) {
+ return -1;
+ } else {
+ switch (state) {
+ case 1:
+ /* Enable write access, clear bit GPIO0. */
+ out_be32((void*)GPIO0_OR,
+ in_be32((void*)GPIO0_OR) &
+ ~CONFIG_SYS_EEPROM_WP);
+ state = 0;
+ break;
+ case 0:
+ /* Disable write access, set bit GPIO0. */
+ out_be32((void*)GPIO0_OR,
+ in_be32((void*)GPIO0_OR) |
+ CONFIG_SYS_EEPROM_WP);
+ state = 0;
+ break;
+ default:
+ /* Read current status back. */
+ state = ((in_be32((void*)GPIO0_OR) &
+ CONFIG_SYS_EEPROM_WP) == 0);
+ break;
+ }
+ }
+ return state;
+}
+
+int do_eep_wren(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ int query = argc == 1;
+ int state = 0;
+
+ if (query) {
+ /* Query write access state. */
+ state = eeprom_write_enable(CONFIG_SYS_I2C_EEPROM_ADDR, -1);
+ if (state < 0) {
+ puts("Query of write access state failed.\n");
+ } else {
+ printf("Write access for device 0x%0x is %sabled.\n",
+ CONFIG_SYS_I2C_EEPROM_ADDR,
+ state ? "en" : "dis");
+ state = 0;
+ }
+ } else {
+ if (argv[1][0] == '0') {
+ /* Disable write access. */
+ state = eeprom_write_enable(CONFIG_SYS_I2C_EEPROM_ADDR,
+ 0);
+ } else {
+ /* Enable write access. */
+ state = eeprom_write_enable(CONFIG_SYS_I2C_EEPROM_ADDR,
+ 1);
+ }
+ if (state < 0)
+ puts("Setup of write access state failed.\n");
+ }
+
+ return state;
+}
+
+U_BOOT_CMD(eepwren, 2, 0, do_eep_wren,
+ "Enable / disable / query EEPROM write access",
+ ""
+);
+#endif /* #if defined(CONFIG_SYS_EEPROM_WREN) */
projects / karo-tx-uboot.git / blobdiff